aat3152 Datasheet - Analogictech
The AAT3152 is a high-frequency, 1MHz, 20mA, constant-frequency, current-mode step-up converter for powering high-brightness LEDs.
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📝 Component Overview
The AAT3152 is a high-frequency, 1MHz, 20mA, constant-frequency, current-mode step-up converter for powering high-brightness LEDs. It operates from a single-cell battery and can drive up to 4 white LEDs in series, making it suitable for applications such as camera flash, LCD display backlighting, and other high-brightness LED applications.
Key Features and Benefits
- 1MHz constant-frequency operation
- 20mA output current capability
- Drives up to 4 white LEDs in series
- Single-cell battery operation
- High-brightness LED driver
- Constant-frequency current-mode control
- Over-temperature protection
- Short-circuit protection
Typical Applications
- Camera flash
- LCD display backlighting
- High-brightness LED lighting
- Portable electronics
- Battery-powered devices
- LED indicators
📊 Complete Technical Specifications
Absolute Maximum Ratings
| Parameter | Value |
|---|---|
| Input Voltage | 5.5V |
| Operating Temperature | -40°C to 85°C |
| Storage Temperature | -40°C to 150°C |
Electrical Characteristics
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | Vin = 3.6V, Iout = 10mA | 4.5V | 5V | 5.5V | V |
| Efficiency | Vin = 3.6V, Iout = 10mA | 80% | 85% | 90% | % |
Package Information
- DFN33-12: 12-pin DFN package
Pin Configuration
- Pin 1: VIN - Input voltage pin
- Pin 2: GND - Ground pin
🔧 Application Guidelines
Design Considerations
The AAT3152 is designed to drive high-brightness LEDs from a single-cell battery. The device operates in constant-frequency current-mode control, which provides excellent line and load regulation. The AAT3152 also features over-temperature protection and short-circuit protection to ensure reliable operation.
Installation Guidelines
The AAT3152 is available in a 12-pin DFN package. The device should be mounted on a PCB with adequate thermal dissipation to ensure reliable operation. The input and output capacitors should be placed as close as possible to the device.
Operational Notes
The AAT3152 is designed to operate from a single-cell battery. The device can drive up to 4 white LEDs in series, making it suitable for applications such as camera flash and LCD display backlighting. The AAT3152 also features a built-in soft-start circuit to prevent inrush current during startup.